#-------------------------------------------------------------
#
# (C) Copyright IBM Corp. 2010, 2015
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#-------------------------------------------------------------


args <- commandArgs(TRUE)
options(digits=22)

library("Matrix")

A <- as.matrix(readMM(paste(args[1], "A.mtx", sep="")))
B <- as.matrix(readMM(paste(args[1], "B.mtx", sep="")))

if( as.integer(args[2])==1 ){
  # MIN
  if( nrow(A)>1 | nrow(B)>1 ){
     if( nrow(B)>nrow(A) ) {
       C <- pmin(B, A);
     }  
     else {
       C <- pmin(A, B);
     }
  }else{
     C <- min(A, B);
  }    
} else{
  # MAX  
  if( nrow(A)>1 | nrow(B)>1 ){
     if( nrow(B)>nrow(A) ){
       C <- pmax(B, A);
     }else{
       C <- pmax(A, B);
     }  
  }else{
     C <- max(A, B);
  } 
}

writeMM(as(as.matrix(C), "CsparseMatrix"), paste(args[3], "C", sep="")); 


